Question

Don't know how to finish.

Simplify the expression and solve the equation. Show all calculations.
\[ \sqrt{28}+\sqrt{63}+\sqrt{175} \]


I think I have
\[2\sqrt{7}+5\]
But can't seem to finish.

Answer 1

`\displaystyle\\√(28)+√(63)+√(175)=\\\\=√(4*7)+√(9*7)+√(25*7)=\\\\=2√(7)+3√(7)+5√(7)=√(7)(2+3+5)=\boxed{\bf10√(7)}`